add solution for day 1

1/calories.py

@@ -3,34 +3,39 @@ from aocd import submit
 
 class Elf:
     '''
-        Elf object
+        object which holds a a list of calories
+        carried by this particular elf
     '''
     calories = list()
 
     def __init__(self, numbers: list) -> None:
         '''
-            data class constructor
+            constructor
         '''
         self.calories = numbers.copy()
 
+    def __lt__(self, other) -> bool:
+        '''
+            compare if sum of calorie is less than other
+        '''
+        return (self.sum_calories() < other.sum_calories())
+
+    def __repr__(self) -> str:
+        '''
+            print string representation of object
+        '''
+        return f'{str(self.calories)}'
+
     def sum_calories(self) -> int:
         '''
             calculate the total calories carried by this elf
         '''
         return sum(self.calories)
 
-    def __lt__(self, other) -> bool:
-        '''
-            check if sum calories is less than other
-        '''
-        return (self.sum_calories() < other.sum_calories())
-
-    def __repr__(self) -> str:
-        return f'{str(self.calories)}'
-
 def parse_input(data: list) -> list:
     '''
         parses the input data and generates a list of elfs
+        from the input data string
     '''
     # split input string into list
     splits = data.split('\n')
@@ -49,9 +54,9 @@ def parse_input(data: list) -> list:
 if __name__ == "__main__":
     # get puzzle and parse data
     puzzle = Puzzle(year=2022, day=1)
-    data = puzzle.input_data
-    elfs = parse_input(data)
-    # sort elfs based on calories
+
+    # get a list of elfs and sort based on calories
+    elfs = parse_input(puzzle.input_data)
     elfs = sorted(elfs, reverse=True)
 
     # part a: submit biggest number of calories
@@ -60,8 +65,6 @@ if __name__ == "__main__":
     submit(answer, part='a', day=1, year=2022)
 
     # part b: submit the calorie sum of the top 3 elfs
-    answer = 0
-    for elf in elfs[:3]:
-        answer += elf.sum_calories()
+    answer = sum([ elf.sum_calories() for elf in elfs[:3]])
     print(f'answer part b: {answer}')
     submit(answer, part='b', day=1, year=2022)